I have had my 2012 4.6 for about two weeks and my first issue was this audio blackout two days ago. I was playing a disc, parked the car and came back after about 20 minutes and all audio was dead, XM, CD, Navigation, etc. I did NOT get the antenna error. Went home and parked for about 30 minutes. Came out and all was well. Last night my wife and I were on the way to the movies and I was flipping back and forth between the Nav and a CD. It froze for a second, made an electronic sound like your old tube style televisions made when you turned them on and off and the screen when blank at the same time and quickly flashed the big "Genesis" while the entire system rebooted. It took about 10 seconds and the CD started playing right where it left off. Very disconcerting. Has anyone even seen a TSB on this audio issue? Is it just the Tech version that has experienced this? If not, we need to notify Hyundai in writing(all of us that have experienced this) so it can at least get on their radar. I don't think talking to the clueless Hyundai service guys will get us anywhere. No way I'm letting Bubba at the dealership play doctor on my Genny guessing at it by replacing parts without a clue. I've read where people have gone through head units, amps, antenna's to no avail. The only disappointments with this car so far is the audio. I love the detailed sound but the audio level is anemic and pathetically low. I like to blast my music from time to time and the max volume level is just sad for all the bragging Hyundai does about the Lexicon. An upscale audio installer offered a solution to this with a product that serves as an audio bridge between the speakers and the unit that will unleash all that wattage

seriously considering it.